Fibromyalgia means "sore muscles". It is widespread muscularskeletal pain and fatigue disorder for which causes are unknown. You have pain in the musles, tendons and ligaments as if they have been overworked. Sometimes you get twitching and burning sensations. Their is a definition on this site if you go to the home there are other underlying conditions with this syndrome.
Myofascial Pain Syndrome affects the mayofascil around different systems of the body. This seems to be the worst part if you are one of the ones lucky enough to get it with the other. This can affect the mucles deep into the mucsle with trigger points that hurt to have release the nodule affecting or referring pain to other parts of the body. Yes, sometimes relieving these trigger points can be very helpful but can also be very painful. Hope this helps. Read information on the Fibromyalgia dite as well. Educate yourself as much as you can to be able to talk to your doctors intelligently and asking the right questions. Hope this helps.